Pickled pickles are shaped like pineapples and are pickled mustard bumps. The mustard tuber pimple looks like a pineapple, which is caused by its special gene. Mustard bumps, also known as mustard heads, bumps and so on. Pickled mustard tuber pimple is a kind of pickle that the northeast people like to make, also called pickled pepper pimple, which is very famous in the northeast. Mustard pimple is the root of millet mustard and a famous vegetable in China. It grows underground like a pineapple and looks like a pimple.